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A platform for research: civil engineering, architecture and urbanism
The role of near terrain turbulence in the prediction of ground level pollutant concentrations in complex terrain
Abstract Seven cases from the EPA Small Hill Impaction Study that included stable flow with a stagnating streamline are analyzed. Although each case was quite similar meteorologically, the stimulated plumes released on the stagnation streamline produced high surface concentrations of tracer gas in four cases, and quite low concentrations in the remaining three cases. The difference is explained by examining near terrain turbulence, with higher near terrain turbulence producing the higher surface concentrations. The actual concentrations are compared to a standard Gaussian dispersion model. A modified model demonstrating improved prediction capability is presented.
The role of near terrain turbulence in the prediction of ground level pollutant concentrations in complex terrain
Abstract Seven cases from the EPA Small Hill Impaction Study that included stable flow with a stagnating streamline are analyzed. Although each case was quite similar meteorologically, the stimulated plumes released on the stagnation streamline produced high surface concentrations of tracer gas in four cases, and quite low concentrations in the remaining three cases. The difference is explained by examining near terrain turbulence, with higher near terrain turbulence producing the higher surface concentrations. The actual concentrations are compared to a standard Gaussian dispersion model. A modified model demonstrating improved prediction capability is presented.
The role of near terrain turbulence in the prediction of ground level pollutant concentrations in complex terrain
Spangler, Timothy C. (author)
Atmospheric Environment ; 20 ; 861-865
1985-08-15
5 pages
Article (Journal)
Electronic Resource
English
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